Scalar results in Hibernate by R4R Team

Queries can specify a property of a class in the select clause. Here we can can even call SQL aggregate functions. Properties or aggregates are considered "scalar" results and not entities in persistent state.

Iterator results = session.createQuery( "select student.color, min(student.birthdate), count(student) from Student student " +
        "group by student.color")

while ( results.hasNext() ) 
    Object[] row = (Object[]);
    Color type = (Color) row[0];
    Date oldest = (Date) row[1];
    Integer count = (Integer) row[2];
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